<template>
  <el-container class="home-container">
    <!-- 头部区 -->
    <el-header>
      <div>
        <img src="..\assets\touxiang.gif" alt />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区 -->
    <el-container>
      <!-- 左侧区 -->
      <el-aside :width="isCollapse?'64px':'200px'">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏区 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" :unique-opened="true" 
        :collapse="isCollapse" collapse-transition="false" router default-active="activePath">
          <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menulist" :key='item.id'>
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+ subItem.path)">
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧区 -->
      <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
    data(){
        return{
           menulist:[],
           iconsObj:{
               '125':'el-icon-user-solid',
               '103':'el-icon-lock',
               '101':'el-icon-shopping-cart-1',
               '102':'el-icon-shopping-cart-full',
               '145':'el-icon-pie-chart'
           },
           //是否折叠
           isCollapse:false,
           //被激活的
           activePath:''
        }
    },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
 
  },
  methods: {
    logout() {
      //清空token
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    //获取所有的菜单
     async getMenuList(){
         const {data:res} = await this.$http.get('menus')
         if(res.meta.status !== 200) return this.$message.error(res.meta.msg);
         this.menulist = res.data
         console.log(res)
     },
     //点击按钮菜单的折叠和展开
     toggleCollapse (){
         this.isCollapse = !this.isCollapse
     },
     //保存链接的激活状态
     saveNavState(activePath){
         window.sessionStorage.setItem('activePath',activePath)
         this.activePath = activePath
     }
  }
};
</script>
<style  scoped>
.home-container {
  height: 100%;
}
.el-header {
  display: flex;
  justify-content: space-between;
  background-color: #373d41;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
}
.el-header div {
  display: flex;
  align-items: center;
}
.el-aside {
  background-color: #333744;
}
.el-menu{
    border-right: none;
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button{
    background-color: #4a5064;
    color: white;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.4em;
    cursor: pointer;
}
</style>